172730633 has 4 divisors (see below), whose sum is σ = 172897920. Its totient is φ = 172563348.

The previous prime is 172730617. The next prime is 172730681. The reversal of 172730633 is 336037271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 336037271 = 41 ⋅8196031.

It is a cyclic number.

It is not a de Polignac number, because 172730633 - 2⁴ = 172730617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172730633.

It is not an unprimeable number, because it can be changed into a prime (172730603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82085 + ... + 84162.

It is an arithmetic number, because the mean of its divisors is an integer number (43224480).

Almost surely, 2^172730633 is an apocalyptic number.

It is an amenable number.

172730633 is a deficient number, since it is larger than the sum of its proper divisors (167287).

172730633 is a wasteful number, since it uses less digits than its factorization.

172730633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167286.

The product of its (nonzero) digits is 15876, while the sum is 32.

The square root of 172730633 is about 13142.7026520423. The cubic root of 172730633 is about 556.9161192499.

The spelling of 172730633 in words is "one hundred seventy-two million, seven hundred thirty thousand, six hundred thirty-three".